Tube sanding tool



April 1940. J. T. ROBERTS 2,196,942

TUBE SANDING TOOL Filed Aug. 17, 1939' fly J Inventdr A tiorneys Patented Apr. 9, 1940 Jimmie T. Roberts, Dallas, Tex.

Application August 1'7, 1939, Serial No. 290,687

Claims.

The present invention relates to toolsfor sanding and cleaning copper fittings and tubes preparatory to soldering the same.

More specifically the invention comprises a 5 stationary jaw and a spring-actuated expansible jaw, together with means for securing an abrasive sheet of material in position for surrounding the jaws whereby to insert the same in the end of the fitting or tube for cleaning the.

same preparatory to soldering.

A further object is to provide a tool of this character of simple and practical construction, which is eificient and reliable in performance, relatively inexpensive to manufacture and otherwise well adapted for the purposes for which the same is intended.

Other objects and advantages reside in the details of construction and operation as more fully hereinafter described and-claimed, reference being had to the accompanying drawing forming part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure 1 is a'perspective view of the tool.

Figure 2 is a side elevational view showing the same in position when inserted in the end of the fitting.

Figures 3 and 4 are transverse sectional views taken respectively on the lines 33 and 4-4 of Figure 2, and

Figure 5 is a perspective view of the locking ring for the movable jaw.

Referring now to the drawing in detail wherein for the purpose of illustration I have disclosed a preferred embodiment of the invention the numeral 5 designates a stationary jaw formed integral at its inner end with a head 6 which constitutes a handle. At the junction of the jaw with the handle is a shank portion 1 on which is formed a flange 8, the jaw being ofiset longitudinally at one side of the shank and handle, as clearly shown in Figure 2 of the drawing.

The jaw 5 is rounded transversely on itsouter surface, as shown at 9, and is provided with a flat inner face, as shown at IU.

45 Cooperating with the jaw 5 is a movable jaw ll of substantially similar shape, the movable jaw being free at each end and surrounding an intermediate portion of each of the jaws is a ring member l2 provided with a diametrically 50 extending pin l3 on which is mounted a coiled spring l4 positioned between the fiat opposed surfaces of the jaws 5 and II, the ends l5 and I6 of the spring extending longitudinally inwardly, the extremities of the end portions of the spring being bent laterally, as shown at H,

and seated in grooves l8-l8 formed in the respective jaws whereby to anchor the ends of the spring.

Portions of the edges of each of the jaws 5 and H are cut-away, as shown at l9, to accom- 5 modate the end portions l5 and I6 of the spring to prevent interference with the opening and closing movement of the jaws.

The outer end of the movable jaw I I is provided with a longitudinally extending split 20 10 within which one end of a sheet of abrasive material 2| may be inserted, the sheet being adapted to be wrapped around both of the jaws. The outer end of the stationary jaw 5 is provided I with a circumferentially extending rib 22 adapted 1 to force the abrasive material in the groove 23 formed within the fitting or tube 24 to be cleaned.

Slidably mounted on the flange 8 is a locking ring 25 having a pair of inturned lugs 26 at 20 the diametrically opposite edges of the ring whereby to contact the flange and limit the inward movement of the ring to prevent accidental displacement therefrom.

The inner end of the jaw II, at its inner sur- 25 face, is provided with a shoulder 21 under which the ring 25 is adapted to be moved whereby to secure the outer end of the jaw in contractedposition during the insertion of the jaws in the end of the fitting 24, as shown in Figure 2 of 30 the drawing.

By sliding the ring 25 rearwardly it will be apparent that the jaw II will then become expanded to press the abrasive sheet 2| against the inner wall of the fitting whereby upon the 5 rotation of the tool the fitting, including the groove 23, will be thoroughly cleaned and placed in condition for effectively receiving the solder.

It is believed the details of construction and manner of use of the device will be readily understood from the foregoing without further detailed explanation.

Having thus described the invention, what I claim is:

A tube cleaning tool comprising a stationary jaw having a handle formed on its inner end,

a movable jaw pivotally carried by the stationary jaw, spring means yieldably separating the outer ends of the jaws, and means for attaching an abrasive sheet to the outer end of one of said jaws.

A tube cleaning tool comprising a stationary jaw having a handle formed on its inner end, a movable jaw, a ring surrounding said jaws,

spring means carried by the ring for yieldably separating the outer ends of the jaws, and means for attaching an abrasive sheet to theouter end of one of the jaws.

3. A tube cleaning tool comprising a stationary jaw having a handle formed on its inner end, a movable jaw, a ring surrounding said jaws, spring means carried by the ring for yieldably separating the outer ends of the jaws, and means for attaching an abrasive sheet to the outer end of one of the jaws, and a locking member for securing the movable jaw in clamping engagement with the stationary jaw to secure the abrasive sheet therebetween.

4. A tube cleaning tool comprising a stationary jaw having a handle formed on its inner end, a movable jaw, a ring surrounding said jaws, spring means carried by the ring for yieldably separating the outer ends of the jaws, and means for attaching an abrasive sheet to the outer end of one of the jaws, and a locking ring slidable on the stationary jaw and ridable under the inner end of the movable jaw to secure the abrasive sheet in clamping engagement between the aws.

5. A cleaning tool for the internal groove of a tubular fitting, said tool comprising a stationary jaw having a handle formed on its inner end, a movable jaw pivotally carried by the stationary jaw, spring means yieldably separating the outer ends of the jaws, and means for at-' taching an abrasive sheetto the outer ends of the jaws, one of said jaws having a circumferential rib adapted to press the sheet into the groove of the fitting.

JIMMIE T. ROBERTS. 

